Fixed test 554 to pass the torture test.

lib/formdata.c

@@ -705,7 +705,7 @@ CURLFORMcode FormAdd(struct curl_httppost **httppost,
   }
 
   if(CURL_FORMADD_OK == return_value) {
-    /* go through the list, check for copleteness and if everything is
+    /* go through the list, check for completeness and if everything is
      * alright add the HttpPost item otherwise set return_value accordingly */
 
     post = NULL;